Contract 0x8ac76a51cc950d9822d68b83fe1ad97b32cd580d

 
Txn Hash
Block
From
To
Value [Txn Fee]
0x1dc22588659ce16c3302c69db30e016a36bb54e995aad96eaeb29f903d9be71b72922252021-05-10 8:11:4540 secs agoBinance: Hot Wallet IN  USD Coin: USDC Token0 BNB0.000323442
0x67d8f0b585ef314522d006cf0a4bb47a0f6cdea048c1fa66cc37bb3d7e4267ab72922252021-05-10 8:11:4540 secs agoBinance: Hot Wallet IN  USD Coin: USDC Token0 BNB0.000323298
0xe0a7952d16970ae6b61fd085f6058ef2c7e6f05c8280dd2d0e8f0c2f564c7fdb72922242021-05-10 8:11:4243 secs agoBinance: Hot Wallet IN  USD Coin: USDC Token0 BNB0.000323298
0xfa3e9b5ed70c76a670ff0e797982a74b3da5b2dd0e232f9c7c07461ca37dd10d72922212021-05-10 8:11:3352 secs ago0xde152caeb53f1acc1a54eaff80381220f01573b7 IN  USD Coin: USDC Token0 BNB0.000269415
0x923cf5f07843a6eebe343356106797ce2a92f410ade4e127427a22efebd1f5bd72922202021-05-10 8:11:3055 secs ago0x90a8df82903f2a61decd241832bd427410da7c40 IN  USD Coin: USDC Token0 BNB0.000194535
0xb593498033ccf113dc4e8aeb328af9b2ed21614c5c2b885032bcb8d1aa655b3572922112021-05-10 8:11:031 min ago0xe1ab519a82660173502909b51a9930395a951e19 IN  USD Coin: USDC Token0 BNB0.000377181
0x416e9f932ce493e48bc6229ba941d865f9472f7ac131d6a49fba2425cf0eaddb72922002021-05-10 8:10:301 min ago0x95bfe397282f504e39c0a82a9ed6a2e32103dc5d IN  USD Coin: USDC Token0 BNB0.000194535
0x55837bcbe583cf2e7e6d008ac2dc8baaa8e135b729dea47a78ebe9fbb77714ce72921972021-05-10 8:10:212 mins ago0x4a4c15198e33bb0018751df444cbadd04b9fed92 IN  USD Coin: USDC Token0 BNB0.000269415
0x2de88b14636c1da3bceacfe60a4c05821010e28db21d56f4ae4459e2c37dce4272921962021-05-10 8:10:182 mins ago0x9a6dd73bb81e97afba26c1687dc9749c085c1a6f IN  USD Coin: USDC Token0 BNB0.00023576
0x943a3791e985171d7ecad3686d7342f46b551f838541ee21913032a25545cdf672921912021-05-10 8:10:032 mins ago0xbe4d17382d770c260de51d07468aab7a254ec86e IN  USD Coin: USDC Token0 BNB0.0002404752
0x8488a94020946c0b689fc4ede1ac6f3ec45069b215f04ca23156a05ec7d57f6e72921872021-05-10 8:09:512 mins ago0x3d5805342ffd4b907cfab87f194d9401df216958 IN  USD Coin: USDC Token0 BNB0.00047152
0xa2989cd913f0b49af4ca10a11ea1aa0e6f693d616aa52b0e44ccc4452021b08e72921752021-05-10 8:09:063 mins ago0xfdba76029046e9385569fb13cfd8e1f5aa0ea953 IN  USD Coin: USDC Token0 BNB0.0002962905
0x9d9333294242f2f13ff5fc8cf9fc81944c2a8de0a426441249fd825e2203149372921752021-05-10 8:09:063 mins ago0xb07e261dd2068ce7bc632ead3497df169ba73b74 IN  USD Coin: USDC Token0 BNB0.000233514
0x5d96f28ee542d5695a487c14f79ca20fe787b602804c40d4b9a55e428fa9ab1f72921712021-05-10 8:08:493 mins ago0x3f779aaa53901f3e99335b7ce6de55fee274f21e IN  USD Coin: USDC Token0 BNB0.00023576
0x434843f5905520f2e3b92f7786dbd34c3f5b965a218ac3af16a8c770269bde1772921712021-05-10 8:08:493 mins ago0xf492b28cf8d43b42ca0bee2205f53ba1001c3237 IN  USD Coin: USDC Token0 BNB0.0002748645
0x0caa83ea6ed1c126c828efdf0922b92df1a2a6f09ae03239c06e5c0ae4778e5672921712021-05-10 8:08:493 mins ago0x1729ddf119ba9653e9544f89a5d13adc144050b5 IN  USD Coin: USDC Token0 BNB0.00047152
0x8313239328b6337eb6fdaf946c2075e5a021e251d454923b9fc232058dd889ee72921652021-05-10 8:08:313 mins ago0x0f80a7d9f15005312ee1a8bf28aac7227746e5ac IN  USD Coin: USDC Token0 BNB0.00023576
0xaacd174a4bba3da4d1e26bd8877700ba2745ff3d78b415ac3d6348b6e444513972921592021-05-10 8:08:134 mins ago0x36ab6fece92691fdfe2d105d0ed12418665809e1 IN  USD Coin: USDC Token0 BNB0.00023576
0x8110a91f579e446f68d31304601077095e54394184901e3f11a1f00279863ff172921572021-05-10 8:08:074 mins ago0x32ab5272aa86ea822aad422e587dde0e1b5c8a3d IN  USD Coin: USDC Token0 BNB0.00023576
0xdcff0ec0140529d1e22e4a1f95f9407f92076aa15ce608bc0cabd021dc1c889472921462021-05-10 8:07:324 mins ago0x3dce2d4cfc40098ef03a0e0ac0441fe964442821 IN  USD Coin: USDC Token0 BNB0.000194415
0x956c811c131e9e2d2310b5fbba8a3b346f7b9553a87c2e754fa22089f5ee5e9972921402021-05-10 8:07:135 mins ago0x82b0eb1e69e1743099c5364a3d79b69cc1148b11 IN  USD Coin: USDC Token0 BNB0.00047152
0x40e63fcd4fe8b1e31744ddb0e0a7ff3b653d42ed2859e3b4f9178ecc3e520ad672921402021-05-10 8:07:135 mins ago0x82b0eb1e69e1743099c5364a3d79b69cc1148b11 IN  USD Coin: USDC Token0 BNB0.00016768
0x60c88041a04b6ed5d5a62652f9dbf7d9c28c5c9ba4da70ab7c3d90c43dc3af7172921342021-05-10 8:06:545 mins ago0x3f2e82eb92fe2a9fee4596c1550e0c8a7b0ead99 IN  USD Coin: USDC Token0 BNB0.000808425
0x1e9bb08b7b4d7eeb477c435b12fd05a237412847c950cdc96511351ce83c7aa472921292021-05-10 8:06:395 mins ago0x4abc390225376fe7429f2926771251365470b85c IN  USD Coin: USDC Token0 BNB0.00023576
0x511f536623d0a776e0bc5ca6f95008e59c76ae70bcfdd70c26241394d2aa7ae372921252021-05-10 8:06:275 mins ago0x82b0eb1e69e1743099c5364a3d79b69cc1148b11 IN  USD Coin: USDC Token0 BNB0.00046852
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Latest 25 internal transaction
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0x25d9d12cbb8d9d0b667d121c32cdf6a0d185fa515961ece3067a6acab6afba0954713352021-03-07 11:59:4263 days 20 hrs ago USD Coin: USDC Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0x25d9d12cbb8d9d0b667d121c32cdf6a0d185fa515961ece3067a6acab6afba0954713352021-03-07 11:59:4263 days 20 hrs ago 1inch.exchange USD Coin: USDC Token0 BNB
0x25d9d12cbb8d9d0b667d121c32cdf6a0d185fa515961ece3067a6acab6afba0954713352021-03-07 11:59:4263 days 20 hrs ago USD Coin: USDC Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0x25d9d12cbb8d9d0b667d121c32cdf6a0d185fa515961ece3067a6acab6afba0954713352021-03-07 11:59:4263 days 20 hrs ago 0xf235a5e5c8df3292114afce280d2a166f520d92e USD Coin: USDC Token0 BNB
0x25d9d12cbb8d9d0b667d121c32cdf6a0d185fa515961ece3067a6acab6afba0954713352021-03-07 11:59:4263 days 20 hrs ago USD Coin: USDC Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0x25d9d12cbb8d9d0b667d121c32cdf6a0d185fa515961ece3067a6acab6afba0954713352021-03-07 11:59:4263 days 20 hrs ago 0xf235a5e5c8df3292114afce280d2a166f520d92e USD Coin: USDC Token0 BNB
0x25d9d12cbb8d9d0b667d121c32cdf6a0d185fa515961ece3067a6acab6afba0954713352021-03-07 11:59:4263 days 20 hrs ago USD Coin: USDC Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0x25d9d12cbb8d9d0b667d121c32cdf6a0d185fa515961ece3067a6acab6afba0954713352021-03-07 11:59:4263 days 20 hrs ago 0xf235a5e5c8df3292114afce280d2a166f520d92e USD Coin: USDC Token0 BNB
0x25d9d12cbb8d9d0b667d121c32cdf6a0d185fa515961ece3067a6acab6afba0954713352021-03-07 11:59:4263 days 20 hrs ago USD Coin: USDC Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0x25d9d12cbb8d9d0b667d121c32cdf6a0d185fa515961ece3067a6acab6afba0954713352021-03-07 11:59:4263 days 20 hrs ago 0xf235a5e5c8df3292114afce280d2a166f520d92e USD Coin: USDC Token0 BNB
0x25d9d12cbb8d9d0b667d121c32cdf6a0d185fa515961ece3067a6acab6afba0954713352021-03-07 11:59:4263 days 20 hrs ago USD Coin: USDC Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0x25d9d12cbb8d9d0b667d121c32cdf6a0d185fa515961ece3067a6acab6afba0954713352021-03-07 11:59:4263 days 20 hrs ago ACryptoS: BUSD-USDT-DAI-USDC Pool USD Coin: USDC Token0 BNB
0x25d9d12cbb8d9d0b667d121c32cdf6a0d185fa515961ece3067a6acab6afba0954713352021-03-07 11:59:4263 days 20 hrs ago USD Coin: USDC Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0x25d9d12cbb8d9d0b667d121c32cdf6a0d185fa515961ece3067a6acab6afba0954713352021-03-07 11:59:4263 days 20 hrs ago 1inch.exchange USD Coin: USDC Token0 BNB
0xc91cf458962db31e9996a34e67cbebea9089c381c6772e2fcccc8a7ea468f97254713322021-03-07 11:59:3363 days 20 hrs ago USD Coin: USDC Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0xb659a952272a8f5e27aeee81e60b15e7cdd9935861de70ef0f7cd94c74abdcde54713292021-03-07 11:59:2463 days 20 hrs ago USD Coin: USDC Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0xb659a952272a8f5e27aeee81e60b15e7cdd9935861de70ef0f7cd94c74abdcde54713292021-03-07 11:59:2463 days 20 hrs ago 0x36eea950eb74ca6639f64fb4b16f0adb6844ec72 USD Coin: USDC Token0 BNB
0x863267dbf054599f5c90fd7911e2de8bb9d944b2f1248854146aceeda709ab8654713222021-03-07 11:59:0363 days 20 hrs ago USD Coin: USDC Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0x863267dbf054599f5c90fd7911e2de8bb9d944b2f1248854146aceeda709ab8654713222021-03-07 11:59:0363 days 20 hrs ago 0x516c18dc440f107f12619a6d2cc320622807d0ee USD Coin: USDC Token0 BNB
0x863267dbf054599f5c90fd7911e2de8bb9d944b2f1248854146aceeda709ab8654713222021-03-07 11:59:0363 days 20 hrs ago USD Coin: USDC Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0x863267dbf054599f5c90fd7911e2de8bb9d944b2f1248854146aceeda709ab8654713222021-03-07 11:59:0363 days 20 hrs ago 0x516c18dc440f107f12619a6d2cc320622807d0ee USD Coin: USDC Token0 BNB
0x863267dbf054599f5c90fd7911e2de8bb9d944b2f1248854146aceeda709ab8654713222021-03-07 11:59:0363 days 20 hrs ago USD Coin: USDC Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0x863267dbf054599f5c90fd7911e2de8bb9d944b2f1248854146aceeda709ab8654713222021-03-07 11:59:0363 days 20 hrs ago Venus: vUSDC Token USD Coin: USDC Token0 BNB
0xce1fcaf640aa020b7df2bb9a54c3900754584d69c93236964b1b3e4096470b8854713222021-03-07 11:59:0363 days 20 hrs ago USD Coin: USDC Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0xce1fcaf640aa020b7df2bb9a54c3900754584d69c93236964b1b3e4096470b8854713222021-03-07 11:59:0363 days 20 hrs ago ACryptoS: BUSD-USDT-DAI-USDC Pool USD Coin: USDC Token0 BNB
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Contract Source Code Verified (Similar Match)
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0xA6Ec2Fe4F6040b188A926048f44c9A59Fca189d4

Contract Name:
BEP20UpgradeableProxy

Compiler Version
v0.6.4+commit.1dca32f3

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, Apache-2.0 license
/**
 *Submitted for verification at BscScan.com on 2020-09-29
*/

// File: openzeppelin-solidity/contracts/proxy/Proxy.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 * 
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 * 
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     * 
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())

            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)

            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())

            switch result
            // delegatecall returns 0 on error.
            case 0 { revert(0, returndatasize()) }
            default { return(0, returndatasize()) }
        }
    }

    /**
     * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal virtual view returns (address);

    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     * 
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _fallback() internal {
        _beforeFallback();
        _delegate(_implementation());
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback () payable external {
        _fallback();
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive () payable external {
        _fallback();
    }

    /**
     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
     * call, or as part of the Solidity `fallback` or `receive` functions.
     * 
     * If overriden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {
    }
}

// File: openzeppelin-solidity/contracts/utils/Address.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.2;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies in extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return _functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        return _functionCallWithValue(target, data, value, errorMessage);
    }

    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// File: openzeppelin-solidity/contracts/proxy/UpgradeableProxy.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;



/**
 * @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
 * implementation address that can be changed. This address is stored in storage in the location specified by
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
 * implementation behind the proxy.
 * 
 * Upgradeability is only provided internally through {_upgradeTo}. For an externally upgradeable proxy see
 * {TransparentUpgradeableProxy}.
 */
contract UpgradeableProxy is Proxy {
    /**
     * @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
     * 
     * If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
     * function call, and allows initializating the storage of the proxy like a Solidity constructor.
     */
    constructor(address _logic, bytes memory _data) public payable {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        _setImplementation(_logic);
        if(_data.length > 0) {
            // solhint-disable-next-line avoid-low-level-calls
            (bool success,) = _logic.delegatecall(_data);
            require(success);
        }
    }

    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 private constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Returns the current implementation address.
     */
    function _implementation() internal override view returns (address impl) {
        bytes32 slot = _IMPLEMENTATION_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            impl := sload(slot)
        }
    }

    /**
     * @dev Upgrades the proxy to a new implementation.
     * 
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(Address.isContract(newImplementation), "UpgradeableProxy: new implementation is not a contract");

        bytes32 slot = _IMPLEMENTATION_SLOT;

        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, newImplementation)
        }
    }
}

// File: openzeppelin-solidity/contracts/proxy/TransparentUpgradeableProxy.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;


/**
 * @dev This contract implements a proxy that is upgradeable by an admin.
 * 
 * To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector
 * clashing], which can potentially be used in an attack, this contract uses the
 * https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two
 * things that go hand in hand:
 * 
 * 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if
 * that call matches one of the admin functions exposed by the proxy itself.
 * 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the
 * implementation. If the admin tries to call a function on the implementation it will fail with an error that says
 * "admin cannot fallback to proxy target".
 * 
 * These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing
 * the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due
 * to sudden errors when trying to call a function from the proxy implementation.
 * 
 * Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,
 * you should think of the `ProxyAdmin` instance as the real administrative inerface of your proxy.
 */
contract TransparentUpgradeableProxy is UpgradeableProxy {
    /**
     * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
     * optionally initialized with `_data` as explained in {UpgradeableProxy-constructor}.
     */
    constructor(address _logic, address _admin, bytes memory _data) public payable UpgradeableProxy(_logic, _data) {
        assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
        _setAdmin(_admin);
    }

    /**
     * @dev Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);

    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 private constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    /**
     * @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.
     */
    modifier ifAdmin() {
        if (msg.sender == _admin()) {
            _;
        } else {
            _fallback();
        }
    }

    /**
     * @dev Returns the current admin.
     * 
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.
     * 
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
     */
    function admin() external ifAdmin returns (address) {
        return _admin();
    }

    /**
     * @dev Returns the current implementation.
     * 
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.
     * 
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`
     */
    function implementation() external ifAdmin returns (address) {
        return _implementation();
    }

    /**
     * @dev Changes the admin of the proxy.
     * 
     * Emits an {AdminChanged} event.
     * 
     * NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}.
     */
    function changeAdmin(address newAdmin) external ifAdmin {
        require(newAdmin != address(0), "TransparentUpgradeableProxy: new admin is the zero address");
        emit AdminChanged(_admin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev Upgrade the implementation of the proxy.
     * 
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
     */
    function upgradeTo(address newImplementation) external ifAdmin {
        _upgradeTo(newImplementation);
    }

    /**
     * @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified
     * by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the
     * proxied contract.
     * 
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
     */
    function upgradeToAndCall(address newImplementation, bytes calldata data) external payable ifAdmin {
        _upgradeTo(newImplementation);
        // solhint-disable-next-line avoid-low-level-calls
        (bool success,) = newImplementation.delegatecall(data);
        require(success);
    }

    /**
     * @dev Returns the current admin.
     */
    function _admin() internal view returns (address adm) {
        bytes32 slot = _ADMIN_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            adm := sload(slot)
        }
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        bytes32 slot = _ADMIN_SLOT;

        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, newAdmin)
        }
    }

    /**
     * @dev Makes sure the admin cannot access the fallback function. See {Proxy-_beforeFallback}.
     */
    function _beforeFallback() internal override virtual {
        require(msg.sender != _admin(), "TransparentUpgradeableProxy: admin cannot fallback to proxy target");
        super._beforeFallback();
    }
}

// File: contracts/BEP20UpgradeableProxy.sol

pragma solidity ^0.6.0;


contract BEP20UpgradeableProxy is TransparentUpgradeableProxy {

    constructor(address logic, address admin, bytes memory data) TransparentUpgradeableProxy(logic, admin, data) public {

    }

}

Contract ABI

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Deployed ByteCode Sourcemap

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Swarm Source

ipfs://5c518be5ecdac9ebba758e8ce0b8e0dcacae92de07203f44e322e833b133a575
Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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